Golf ball
US5068151A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 2, 1990 |
| Grant date | Nov 26, 1991 |
| Priority date | — |
| Expiry date | Feb 2, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2998
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
Disclosed is a golf ball having improved impact resilience, which comprises a core and a cover covering the core, wherein the cover is a lithium neutralized ionomer resion which is a copolymer of 10 to 20% by weight of an alpha, beta-unsaturated carboxylic acid and the rest of ethylene, of which 20 to 70 mol % of carboxyl groups are neutralized with lithium ion, and the ionomer resin has a melt index of 0.5 to 5.0 and a shore D hardness of at least 60. The lithium neutralized ionomer resin may be combined with a di- or tri- valent metal neutralized ionomer resin which is a copolymer of 10 to 20% by weight of an alpha, beta-unsaturated carboxylic acid and the rest of ethylene, of which 40 to 70 mol % of carboxyl groups are neutralized with di- or tri- valent metal ion, and which has a melt index of 0.5 to 5.0 and a shore D hardness of 60 to 80.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.